What does ER stand for?

It is a full 5 of eye relief and it is waterproof, fogproof as well as shockproof.

Its straight 30mm tube promotes consistent eye relief at all magnifications and a variety of mounting options.

The eye relief has been extended to make the Safari Pro functional with eyeglasses, and features soft profiled eyecups to contour your face while maintaining good levels of brightness and blocking side-light, haze, and UV rays.

WHEN TO CALL YOUR DOCTOR FOR EYE ALLERGY · You think your child needs to be seen · Sacs of yellow fluid on whites of eyes or inner lids · Eyelids are swollen shut (or almost) · Discharge on eyelids that''s not cleared after taking allergy medicines for 2 days The Natural Choice for Allergy Eye Relief Eye Doctor recommended Similasan Allergy Eye Relief eye drops stimulate the eye´s natural ability to fight symptoms of allergies due to pollen, pet dander, mold spores and more.

She says Similasan's Stye Eye Relief hit drug and mass shelves in the spring of 2006 but is only now beginning to gain distribution in supermarkets.

It also features multi-layer coated lenses, quick-focus eyepiece, long eye relief of 3.

The mini-dome simulator, according to a Saab spokesman, "provides eye relief over the entire spherical surface and optimizes out-of-window scenes.

Eye relief distance is 25 mm and interpupillary distance is between 58 and 72 mm.